Tysons Corner has more office space than downtown Baltimore, Richmond, and Norfolk put together. It should be the center its own large transit network. The Silver Line and express buses on the Beltway HOT lanes are good first steps, but in the long run Tysons is going to need more routes, connecting it to more places.

In the long run, Tysons needs something more like this:

In recent years, planners in Virginia have begun to seriously consider a Tysons-centric rapid transit network. It doesn’t have a name, and isn’t officially separate from any of the other transportation planning going on in the region, but it shows up on long range regional plans like SuperNoVa and TransAction.

It will be years before any of these additional routes are implemented, and they could look very different from this map once they finally are. Details don’t exist yet, because at this point these are little more than ideas.

But to work as the urban place Fairfax County officials hope Tysons will become, this is the sort of regional infrastructure it’s going to need.